diff options
Diffstat (limited to 'unittests')
| -rw-r--r-- | unittests/ADT/APIntTest.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp index 24a3d9b4ad..7b03d0f00c 100644 --- a/unittests/ADT/APIntTest.cpp +++ b/unittests/ADT/APIntTest.cpp @@ -315,6 +315,17 @@ TEST(APIntTest, StringBitsNeeded16) { EXPECT_EQ(9U, APInt::getBitsNeeded("-20", 16)); } +TEST(APIntTest, Log2) { + EXPECT_EQ(APInt(15, 7).logBase2(), 2); + EXPECT_EQ(APInt(15, 7).ceilLogBase2(), 3); + EXPECT_EQ(APInt(15, 7).exactLogBase2(), -1); + EXPECT_EQ(APInt(15, 8).logBase2(), 3); + EXPECT_EQ(APInt(15, 8).ceilLogBase2(), 3); + EXPECT_EQ(APInt(15, 8).exactLogBase2(), 3); + EXPECT_EQ(APInt(15, 9).logBase2(), 3); + EXPECT_EQ(APInt(15, 9).ceilLogBase2(), 4); + EXPECT_EQ(APInt(15, 9).exactLogBase2(), -1); +} #ifdef GTEST_HAS_DEATH_TEST TEST(APIntTest, StringDeath) { |